First i’m going to say reassure that this is indeed a rumor and that none of this is offically confirmed.
Now that we have that out of the way, a supposed Nintendo of France marketing employee has claimed he knows information about Wii 2. These claims state that Wii 2 will use blu-ray discs and support 1080p and lower resolutions for blu-ray movies and games. The system is supposbly lining up for a Q3 2010 world wide launch and Nintendo could be considering a trade in program to trade in your Wii in order to get money off the Wii 2.
Once again this is a rumor and to be honest source sounds a little shady to me. The actual specs though are believable so the rumor definitely deserves some credit.